Lamp-stove



(No Model.)

J. E. STEPHENS.

LAMP STOVE. No. 327,613. Patented Oct. 6, 1885.

N. PETERS, PiwtwLilhognpMr, WlIMnglom, DC

UNTTnn STATES PATENT OFFICE.

JOHN E. STEPHENS, OF DETROIT, MICHIGAN.

LAMP-STOVE.

SEECIFICATIUN farming part of Letters Patent No. 327,613, dated October6, 1885.

Application filed September 10, 1884. Serial No. 142,643.

To aZZ whom it may concern:

Be it known that I, JOHN E. STEPHENS, of Detroit, in the county of Vayneand State of Michigan, have invented new and useful Improvements inLampStoves; and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had to the accompanyingdrawings, which form a part of this specification.

This invention relates to certain new and useful improvements in theconstruction and operation of 1amp-stoves and it is especially designedas an improvement upon a lampstove for which Letters Patent No. 286,862were issued to me bearing date October 16, 1883.

The invention consists in certain important changes made from the oldconstruction, as described in that patent, by means of which a moreperfect control of the combustion is obtained and a much moresuccessfully-oper ating device secured; and hence the invention consistsin the peculiar construction of the parts and their combinations andarrangement, as more fully hereinafter described.

Figure '1. is a perspective view of my improved device with the flame Aconcentrators and draft-fines removed. Fig. 2 is a central longitudinalvertical section through the same, showing the drafttlues andconcentrators in place.

In the accompanying drawings, which form a part of this specification, Arepresents a metallic tank or reservoir the interior of which isiilled,or nearly so,wit h a porous brick, B, made of tire-clay andasbestns; or this space may be filled with any absorbent andnoncombustible material which absorbs, as a sponge, the oil poured intothe tank. This tank is provided with one or more funnelshaped tubes, O,preferably cast integral with the tank, opening through the bottomthereof and extending slightly above the plane of its top, for thepurposes hereinafter described. The upper edge of this tank terminatesin a rest and flange, a, and fitting upon such rest and within suchflange the cover D is secured by means of screws b. One or more circularopenings, E, are formed in the cover, surrounded by a collar, 0, so thatwhen such cover is in place the axis of the line C and (N0 model.)

the opening E will be coincident. Other smaller openings, F, are alsoformed in the cover, at least one pair of such openings being providedfor each burner ot' the stove; and these openings are adapted to beclosed or disclosed by the dampers G, each pair of these dampers beingconnected together by means of a lever, H, pivotally secured mid waybetween each pair of the openings F, so that the movement of this leverin either direction will simultaneously close or disclose the openings,and where there are more than one pair of such openings for each burnerthe dampers are connected by means of a crossbar, I, so that if thereare four dampers, as shown in Fig. 1, alike movement will close anddisclose the four openings.

J represents draft-flues, preferably made of sheet metal and sleevedupon the top of the fine 0, and closed atv their top ends, just beneathwhich there are formed, near the top of these fines J, perforations d.

K represent cylindrically-shaped flame-concentrators both ends of whichare open, the lower ends being inserted in the openings E in the cover,and resting, by means of the heading 0, upon such cylinder upon the topsof the collars 0. Near the top of this concentrator or cylinder K areformed a series of perforations, f. L are removable covers provided withflanges y of sufiicient depth that when such cover is placed upon thecylinder K it not only closes the top thereof, but such flanges closethe perforations f around its periphery and stop combustion. M is ahandle centrally secured to the cover D, and atfording facilities forhandling the same when the screws by means of which it is secured to thetank are removed.

This device is designed to be set within the fire-box orcombustionchamber of a cooking stove or range, and may be provided withas many burningpoints as desired. The device shown in the drawings isprovided with two burning points designed, each one to set when in placeimmediately below the two boiling-places usually found above suchcombustion-chamber. Ot' course,with0ut departing from the spirit of myinvention, should the top of such range or stove have four or moreboiling-places above the combustionchamber, the device itself may beprovided with alikenumber of burning-places; or these may be reduced innumber to one and still keep within thescope of the present invention.

In practice, the device being constructed substantially as des ib d, andinserted within the. combustion-cha b r N of a cook-stove, as shown indotted lines in Fig. 2, and resting upon the grate O, and the tankhaving been supplied with Oil until the material (non-combustible andabsorbent) with which such tank is filled, or nearly so, is thoroughlyimpregnated, the cover L is removed from the concentrator K,and theopenings F partially disclosed? Now, by means of'a wire with" a bit ofwire-gauze at one end and dipped in any combustible liquid and ignitedand inserted down through the concentrator K, the oil is ignited andcombustion assisted by the air entering through the damper-openings F,the flame being confined within the concentrator and around the flue J.Now, as the flue J becomes warm it causes a draft-current up through theflues G J, which current is divided into smaller currents andpasses outto mingle with the products of combustion through the perforations d,and air also is drawn inwardly through the perforationsf in theconcentrator K, so that a very perfect combustion is secured and thebest possible results obtained. The oil may be filled through an openingfor the purpose, (not shown,) or through either one of the dampers; orthe tank may be connected bymeans of a pipe with the source of supply atany distance, such supply being regulated, if desired, by any suitablevalve.

I am aware of the German patent No. 8,303, dated April 30, 1879, andmake no claim to the construction shown therein as forming part ofmyinvention.

What I claim as my invention is 1. In a lamp or heater having a tank orreservoir and adraft-flue passing upward through such tank, acylindrical flue surmounting said draft-flue and an outer shellsurrounding said cylindrical flue, leaving a space between the same,which forms a combustion chamber around the inner flue, substantially asand for the purpose specified.

2. In a lamp stove or heater, the combination, with a burner-chamber anda tank or reservoir provided with draft openings in its cover, andhaving open connection with the burner-chamber, of dampers arranged tocontrol said openings for the purpose of regulating the supply of airthrough the tank to the burner-chamber, substantially as specified.

3. A lamp-stove having a tank with an airfiue passing upward through thesame, in combination with the flue J and the shell K, surrounding suchflue and forming a combustion-chamber around such flue, and having aseries of perforations, f, near the top of such shell, substantially asset forth.

4. In a lamp stove or heater, the combination, with a combustion-chamber provided with a series of perforations, as specified, of acover, L, having a depending flange of depth sufficient to close theperforations when in use, substantially as and for the purposespecified.

5. In alamp-stove having a tank or reservoir, a combustion-chamber and acover having openings therein, in combination with pivoted dampersarranged in pairs and constructed to close or disclose each pair ofopenings simulv taneously, substantially as described.

6. In combination with the fluid-reservoir, a vapor-burner consisting oftwo concentric cylinders, the inner one having a closed top and formingan air-duct discharging the air circumferentially near its top and nearbut below the top of the outer cylinder, while the latter conducts thevapor toward the point of discharge of the air from the inner cylinder,whereby a more concentrated ring-flame is obtained, substantially asdescribed,

7. In a vapor-stove, a vapor-burner consisting of two cylinders placedconcentrically within each other, the inner cylinder forming anair-flue, which discharges the air circumferentially near its closedtop, while the outer cylinder communicates with the vapor-generatingchamber and conducts said vapors to the point of discharge of air fromthe inner cylinder, in combination with an air-passage into thevapor-generating reservoir, and an adj ustable draft-flue for conductingthe vapor into the outer cylinder, for the purposes of regulating orextinguishing the flame, substantially as described.

8. In a lamp-stove, the tank A, the absorbent and non-combustible brickB, the flue 0, cover D, draft openings F, dampers G, connecting-lever H,perforated flue J, and concentrator K, the parts being constructed,arranged, and operating substantially as and for the purposes set forth.

JOHN E. STEPHENS.

